CN115289972A - Profile hole site detection equipment - Google Patents
Profile hole site detection equipment Download PDFInfo
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- CN115289972A CN115289972A CN202211197330.5A CN202211197330A CN115289972A CN 115289972 A CN115289972 A CN 115289972A CN 202211197330 A CN202211197330 A CN 202211197330A CN 115289972 A CN115289972 A CN 115289972A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/08—Detecting presence of flaws or irregularities
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Abstract
The invention relates to the field of machining detection, in particular to a section hole position detection device. The technical problem is as follows: the existing handheld hole site detection equipment has a single structure and function, and cannot detect holes and quality deviation on a section in a diversified manner. The technical scheme is as follows: a section hole site detection device comprises a connecting ring, an angle adjusting system and the like; the connecting ring is connected with an angle adjusting system for positioning the inclined hole position. The method utilizes the change of the pressure value to judge the incompleteness and the defect inside the circular hole; the problem that the inclined holes in the profile composite plate are difficult to detect by the existing equipment is solved, the profile composite plate is clamped by the two pressing plates in advance, the inclination angle of the inclined holes can be accurately positioned, and the influence on hole position detection due to hand shaking in the detection process is avoided; the screw thread detection head is effectively prevented from being damaged, the friction between the screw thread detection head and a screw hole is reduced by cleaning the fragments, and the fragments are prevented from blocking the screw thread detection head to influence the judgment of a worker on the quality of the screw hole.
Description
Technical Field
The invention relates to the field of machining detection, in particular to a section hole position detection device.
Background
In the production process of the section bar, the hole position on the section bar needs to be detected, and the hole position detection device in Chinese patent (CN 113251887B) indirectly measures and detects the deviation value of the detection hole on the workpiece by measuring the deviation value of the pin shaft relative to the mounting shaft sleeve; such an operation can only simply measure the regularity of the hole sites, but such an operation can be replaced with laser detection.
For composite plates, the internal structure of the plates is loose, the problem of middle collapse and expansion is easily caused in the punching process, the existing detection equipment cannot well detect and judge the inside of a hole site, and the holes cannot be well attached to fasteners when subsequent hole filling and installation are utilized, so that the plates are installed loosely, and the installation effect is influenced.
Meanwhile, the existing composite plate is usually installed in an inclined hole mode in order to improve the installation concealment, the inclined hole detection is more difficult, detection equipment is required to be consistent with the angle of the inclined hole, and the existing handheld detection device cannot detect the inclined hole.
Current hand-held type check out test set is single, can only detect to single round hole, when facing the screw hole, needs manually in the screw thread detection head screw in hole, and can't be to remaining piece clearance in the hole in advance, and the screw thread detection head very easily blocks when leading to detecting, influences the judgement of staff to the screw hole quality.
Disclosure of Invention
The invention provides a profile hole site detection device, aiming at overcoming the defects that the existing handheld hole site detection device is single in structure function, cannot detect holes in a profile in a diversified mode and detects quality deviation.
The technical scheme is as follows: a section bar hole site detection device comprises a handle; the upper part and the lower part of the grip are respectively fixedly connected with a connecting ring; the upper surface of the handle is fixedly connected with an electrified joint; a first electric telescopic piece is arranged inside the handle; the first electric telescopic part is fixedly connected with a bearing plate; the bearing plate is fixedly connected with a laser scanner; the device also comprises a round hole detection system, a support plate, a first spring rod, a pressing block, an angle adjusting system and a threaded hole detection system; the bearing plate is connected with a round hole detection system for detecting the integrity of the inside of the round hole; the round hole detection system is provided with a plurality of supporting plates; each supporting plate is connected with a first spring rod; each first spring rod is fixedly connected with a pressing block; the connecting ring is connected with an angle adjusting system for positioning the inclined hole site; the bearing plate is connected with a threaded hole detection system which is used for pre-cleaning particle residues and detecting threaded holes.
Further, the pressing block is in an ellipsoid shape.
Further, the round hole detection system comprises a first connecting seat, a first power motor, a first fixing frame, a detection rod and a sensor; the right part of the lower surface of the bearing plate is fixedly connected with a first connecting seat; a first power motor is fixedly connected to the first connecting seat; a first fixing frame is fixedly connected to an output shaft of the first power motor; the first fixing frame is connected with a detachable and replaceable detection rod; the middle part of the detection rod is provided with an inductor; the detection rod is fixedly connected with a plurality of supporting plates.
Furthermore, the angle adjusting system comprises a sleeve shaft, a scale indicator, a pressing device, a fixing plate, an arc-shaped block, a second electric telescopic piece and a pressing plate; the left part and the right part of the connecting ring on the lower side are respectively fixedly connected with a sleeve shaft; each sleeve shaft is provided with a scale indicator; a compactor is arranged on the scale indicator; each sleeve shaft is rotatably connected with a fixing plate; each fixed plate is provided with an arc-shaped block; each fixed plate is fixedly connected with a second electric telescopic piece; each second electric telescopic part is fixedly connected with a pressure plate.
Furthermore, a through hole is formed in the middle of the scale indicator, and the angle of the through hole is 180-270 degrees.
Furthermore, the central axis of the arc-shaped block coincides with the central axis of the sleeve shaft, and a clamping groove convenient for the pressing device to cling to is formed in the arc-shaped block.
Furthermore, a plurality of rubber pads for increasing friction are arranged on each pressure plate.
Further, the threaded hole detection system comprises a second connecting seat, a second power motor, a third fixing frame, a third power motor and a buffer type detection structure; a second connecting seat is fixedly connected to the left part of the lower surface of the bearing plate; a second power motor is fixedly connected to the second connecting seat; a third fixing frame is fixedly connected with an output shaft of the second power motor; a third power motor is fixedly connected to the upper part of the third fixing frame; and an output shaft of the third power motor is connected with a buffer type detection structure.
Furthermore, the buffer type detection structure comprises a thread detection head, a connecting shaft, a buffer and a cleaner; a third power motor output shaft is fixedly connected with a connecting shaft; a buffer is fixedly connected to the connecting shaft; a thread detection head is fixedly connected to the buffer; the buffer is fixedly connected with a cleaner which is positioned below the thread detection head.
Furthermore, the device also comprises a tightening mechanism; the connecting ring on the upper side is connected with a tightening mechanism; the tightening mechanism comprises a second fixed frame, a second spring rod and a fastening plate; the left part and the right part of the connecting ring on the upper side are respectively fixedly connected with a second fixing frame; each second fixing frame is connected with a second spring rod; each second spring rod is fixedly connected with a fastening plate.
The beneficial effects are that: according to the invention, the size of the hole site is detected by using the laser scanner, the sensor, the pressing block and the first spring rod are matched, the incomplete interior and the defect interior of the round hole are judged by using the change of the pressure value, and a new hole site is formed in time;
the problem that the inclined hole in the profile composite board is difficult to detect by the existing equipment is solved, the profile composite board is clamped by the two pressing plates in advance, the inclined angle of the inclined hole can be accurately positioned, a worker only needs to hold the handle, and the situation that the hole position detection is influenced by hand shaking in the detection process is avoided;
the thread detection head is effectively prevented from being damaged, the scraps are cleaned to reduce the friction between the thread detection head and the threaded hole, the phenomenon that the scraps clamp the thread detection head to influence the judgment of workers on the quality of the threaded hole is avoided, and the detection quality is improved.
Drawings
FIG. 1 is a schematic view of a first three-dimensional structure of the hole site detecting apparatus for sectional material according to the present invention;
FIG. 2 is a sectional view of a first three-dimensional structure of the hole site detecting apparatus for sectional material according to the present invention;
FIG. 3 is a sectional view of a first three-dimensional structure of the hole site detecting apparatus for sectional material according to the present invention;
FIG. 4 is an enlarged view of the area F of the hole site detecting apparatus for sectional material of the present invention;
FIG. 5 is a schematic view of a first working state of the hole site detecting apparatus for sectional material according to the present invention;
FIG. 6 is a schematic perspective view of a circular hole detecting system according to the present invention;
FIG. 7 is an enlarged view of region G of the hole detecting system of the present invention;
FIG. 8 is a schematic view of a portion of the angular adjustment system of the present invention;
FIG. 9 is a schematic view of a second working state of the hole site detecting apparatus for sectional material according to the present invention;
fig. 10 is a schematic perspective view of the threaded hole detection system of the present invention.
In the above drawings: 1-grip, 2-connecting ring, 3-power-on joint, 4-first electric telescopic part, 5-bearing plate, 6-laser scanner, 7-first connecting seat, 8-first power motor, 9-first fixing frame, 10-detecting rod, 11-inductor, 121-supporting plate, 122-first spring rod, 123-pressing block, 13-sleeve shaft, 14-scale indicator, 15-pressing device, 16-fixing plate, 161-arc block, 17-second electric telescopic part, 18-pressing plate, 181-rubber pad, 19-second fixing frame, 20-second spring rod, 21-fastening plate, 22-second connecting seat, 23-second power motor, 24-third fixing frame, 25-third power motor, 26-thread detecting head, 27-connecting shaft, 28-buffer and 29-cleaner.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
Example 1
A section hole position detection device is shown in figures 1-10 and comprises a handle 1, a connecting ring 2, an electrified joint 3, a first electric telescopic piece 4, a bearing plate 5 and a laser scanner 6; the upper part and the lower part of the handle 1 are respectively fixedly connected with a connecting ring 2; the upper surface of the handle 1 is fixedly connected with an electrified joint 3; a first electric telescopic part 4 is arranged in the handle 1; the telescopic part of the first electric telescopic part 4 is fixedly connected with a bearing plate 5; the bearing plate 5 is fixedly connected with a laser scanner 6;
the device also comprises a round hole detection system, a support plate 121, a first spring rod 122, a pressing block 123, an angle adjusting system and a threaded hole detection system; the bearing plate 5 is connected with a circular hole detection system; a plurality of supporting plates 121 are arranged on the circular hole detection system; each support plate 121 is connected with a first spring rod 122; each first spring rod 122 is fixedly connected with a pressing block 123; the connecting ring 2 is connected with an angle adjusting system; the bearing plate 5 is connected with a threaded hole detection system for pre-cleaning particle residues and detecting threaded holes.
The briquette 123 is ellipsoidal.
The first electric telescopic element 4 is an electric push rod.
The round hole detection system comprises a first connecting seat 7, a first power motor 8, a first fixing frame 9, a detection rod 10 and a sensor 11; a first connecting seat 7 is fixedly connected to the right part of the lower surface of the bearing plate 5; a first power motor 8 is fixedly connected to the first connecting seat 7; a first fixing frame 9 is fixedly connected to an output shaft of the first power motor 8; the first fixed frame 9 is connected with a detachable and replaceable detection rod 10; the middle part of the detection rod 10 is provided with an inductor 11; the detecting rod 10 is fixedly connected with a plurality of supporting plates 121.
The section bar composite sheet of same batch of lottery, with a unsettled fixed mounting of section bar composite sheet, when using section bar hole site check out test set, connect 3 switch-ons of circular telegram to go up the power, handle 1 is held to the measurement personnel hand, when detecting conventional round hole site, the staff presses down control button on the go-between 2 and opens laser scanner 6 immediately, place the sensitization board that uses with laser scanner 6 cooperation in the lower part of section bar composite sheet, the handheld removal handle 1 of staff, move laser scanner 6 and correspond hole site upper portion, utilize laser scanner 6 to measure the normal size in round hole.
After the measurement of the size of the hole is completed, because the requirement of the composite board on the integrity of the hole is higher, the size data of the reaction of the light-sensitive plate cannot be finally detected, the hole on the composite board is easy to have a waist-shaped hole, the operation of the first power motor 8 is controlled, the output shaft of the first power motor 8 drives the first fixing frame 9 to rotate ninety degrees, at this time, the detection rod 10 is positioned right below the laser scanner 6, the first electric telescopic part 4 is controlled to operate subsequently, the first electric telescopic part 4 drives the bearing plate 5 to move downwards, the detection rod 10 drives the connected parts on the detection rod to move downwards, a plurality of pressing blocks 123 drive the first spring rod 122 to move after entering the inside of the circular hole, the first spring rod 122 contacts the inductor 11, the numerical value of the pressure borne on the inductor 11 keeps consistent immediately, in the process of the continuous downward movement of the detection rod 10, if the detected circular hole is waist-shaped, at this time, the first spring rod 122 pushes the pressing block 123 outwards, so that the pressing block 123 continues to be attached to the inner wall of the composite board, the sensor 11, the pressure borne on the sensor 11 is reduced, the transmitted numerical value changes, and the inner part of the circular hole can be judged to have defects, and the defects inside of the circular hole can be found.
Example 2
On the basis of embodiment 1, as shown in fig. 1 to 6, the angle adjusting system comprises a sleeve shaft 13, a scale indicator 14, a presser 15, a fixing plate 16, an arc block 161, a second electric telescopic member 17 and a pressure plate 18; the left part and the right part of the lower connecting ring 2 are respectively fixedly connected with a sleeve shaft 13; each sleeve shaft 13 is provided with a scale indicator 14; a presser 15 is arranged on the scale indicator 14; each sleeve shaft 13 is rotatably connected with a fixing plate 16; each fixing plate 16 is provided with an arc-shaped block 161; each fixed plate 16 is fixedly connected with a second electric telescopic piece 17; each second electric telescopic part 17 is fixedly connected with a pressure plate 18.
The middle part of the scale indicator 14 is provided with a through hole, and the angle of the through hole is 180-270 degrees.
The central axis of the arc block 161 coincides with the central axis of the sleeve shaft 13, and the arc block 161 is provided with a slot convenient for the pressing device 15 to cling to.
The second electric telescopic element 17 is an electric push rod.
Each pressure plate 18 is provided with a plurality of rubber pads 181.
Also comprises a tightening mechanism; the connecting ring 2 at the upper side is connected with a tightening mechanism; the tightening mechanism comprises a second fixed frame 19, a second spring rod 20 and a fastening plate 21; the left part and the right part of the upper connecting ring 2 are respectively fixedly connected with a second fixing frame 19; each second fixing frame 19 is connected with a second spring rod 20; each second spring bar 20 is fixedly connected to a respective fastening plate 21.
The existing equipment is difficult to detect the inclined hole on the profile composite board, the inclined hole detection has the problems that the worker can not keep the stability of the detector for a long time, the hand action of the handheld detection equipment is seriously shaken when facing the inclined hole, the handheld detection equipment can not work normally, the worker therefore pulls the two second spring bars 20 and the two hold-downs 15 apart and pushes the two second spring bars 20 and the two hold-downs 15 on top, the two second spring bars 20 each carrying one fastening plate 21 to move, therefore, the fixing plates 16 originally clamped between the fastening plate 21 and the second fixing frame 19 are released, the two fixing plates 16 are rotated by one hundred eighty degrees, then the operator presses the button on the connecting ring 2 to control the two second electric telescopic parts 17 to operate, the two second electric telescopic parts 17 respectively drive one pressing plate 18 to move, the two pressing plates 18 are attached to two sides of the inclined hole of the profile composite plate, at the same time, the rubber pad 181 on the press plate 18 increases the friction force with the profile composite plate, and then the worker starts to rotate his hand, the rotating angle of the handle 1 is controlled according to the angle of the inclined hole of the section bar in the section bar composite board, the arc block 161 is connected with the scale indicator 14 in a sliding way, the arc block 161 on the fixing plate 16 rotating along with the sliding way is matched with the scale indicator 14 to provide angle prompt for workers, the workers can accurately position the handle 1 to the position consistent with the inclined angle of the inclined hole, then the other hand is used for dismounting the object supporting the two pressing devices 15, the two pressing devices 15 are respectively clamped with one arc block 161 correspondingly to realize the limit, therefore, the stability of the handle 1 is ensured, a worker only needs to hold the handle 1 without suspending the whole section hole site detection equipment, and the subsequent detection operation is consistent with the detection operation.
Example 3
On the basis of embodiment 2, as shown in fig. 1-3 and fig. 9-10, the threaded hole detection system includes a second connection seat 22, a second power motor 23, a third fixing frame 24, a third power motor 25 and a buffer type detection structure; a second connecting seat 22 is fixedly connected to the left part of the lower surface of the bearing plate 5; a second power motor 23 is fixedly connected to the second connecting seat 22; the output shaft of the second power motor 23 is fixedly connected with a third fixing frame 24; a third power motor 25 is fixedly connected to the upper part of the third fixing frame 24; the output shaft of the third power motor 25 is connected with a buffer type detection structure.
The buffer type detection structure comprises a thread detection head 26, a connecting shaft 27, a buffer 28 and a cleaner 29; an output shaft of the third power motor 25 is fixedly connected with a connecting shaft 27; a buffer 28 is fixedly connected to the connecting shaft 27; the buffer 28 is fixedly connected with a thread detection head 26; a cleaner 29 is fixed on the buffer 28, and the cleaner 29 is positioned below the thread detecting head 26.
Besides conventional round holes, the profile composite plate can be provided with threaded holes in advance, the existing manual detection of the threaded holes is still in manual operation, and the efficiency is low; when a threaded hole needs to be detected, the detected threaded hole is a through hole, other tools do not need to be replaced, the second power motor 23 is controlled to operate, the output shaft of the second power motor 23 drives the third fixing frame 24 to rotate, the connecting shaft 27 which moves along with the output shaft is positioned under the laser scanner 6, then the third power motor 25 is controlled to operate at a low rotating speed, at this time, the first electric telescopic piece 4 is controlled to drive the bearing plate 5 to move downwards, the third power motor 25 drives the connecting parts on the third power motor 25 to rotate, the connecting shaft 27 rotates along with the connecting shaft in the downward movement process, the connecting shaft 27 drives the cleaner 29 to rotate, the cleaner 29 firstly enters the threaded hole to clean the debris remained in the threaded hole and pushes the debris downwards to be discharged out of the threaded hole, in the process, the threaded detection head 26 also moves downwards when rotating, if the threaded hole is unqualified, when the irregular teeth and the pitch between the teeth are unqualified, the threaded detection head 26 moves downwards to be blocked, under normal conditions, the threaded detection head 26 is very easy to be blocked, the buffer 28 starts to compensate the downward movement of the telescopic part of the first electric telescopic piece 4 when the threaded detection head 26 is blocked, the detection head 26, the detection head can effectively avoid the detection head from being damaged by the detection, the detection head 26, the detection head 26, the detection quality of the detection head can be effectively reduced after the detection is effectively, and the detection head 26, the detection head is effectively, and the detection head is effectively, the detection head 26, and the detection head can be prevented from being damaged by the detection head, and the detection head 26, and the detection head can be effectively reduced after the detection head, and the detection head is effectively.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
Claims (10)
1. A section bar hole site detection device comprises a handle (1); the upper part and the lower part of the grip (1) are respectively fixedly connected with a connecting ring (2); the upper surface of the grip (1) is fixedly connected with an electrified joint (3); a first electric telescopic piece (4) is arranged in the handle (1); the telescopic part of the first electric telescopic part (4) is fixedly connected with a bearing plate (5); a laser scanner (6) is fixedly connected to the bearing plate (5); the method is characterized in that: the device also comprises a round hole detection system, a support plate (121), a first spring rod (122), a pressing block (123), an angle adjusting system and a threaded hole detection system; the bearing plate (5) is connected with a round hole detection system for detecting the integrity of the inside of the round hole; a plurality of supporting plates (121) are arranged on the circular hole detection system; each support plate (121) is connected with a first spring rod (122); each first spring rod (122) is fixedly connected with a pressing block (123); the connecting ring (2) is connected with an angle adjusting system for positioning the inclined hole site; and a threaded hole detection system for pre-cleaning particle residues and detecting threaded holes is connected to the bearing plate (5).
2. A profile hole site detecting apparatus according to claim 1, wherein: the pressing block (123) is in an ellipsoid shape.
3. A profile hole site detecting apparatus according to claim 1, wherein: the round hole detection system comprises a first connecting seat (7), a first power motor (8), a first fixing frame (9), a detection rod (10) and an inductor (11); a first connecting seat (7) is fixedly connected to the right part of the lower surface of the bearing plate (5); a first power motor (8) is fixedly connected to the first connecting seat (7); a first fixing frame (9) is fixedly connected to an output shaft of the first power motor (8); the first fixed frame (9) is connected with a detachable and replaceable detection rod (10); the middle part of the detection rod (10) is provided with an inductor (11); the detection rod (10) is fixedly connected with a plurality of supporting plates (121).
4. A profile hole site detecting apparatus according to claim 3, wherein: the angle adjusting system comprises a sleeve shaft (13), a scale indicator (14), a pressing device (15), a fixing plate (16), an arc-shaped block (161), a second electric telescopic piece (17) and a pressing plate (18); the left part and the right part of the lower connecting ring (2) are respectively fixedly connected with a sleeve shaft (13); each sleeve shaft (13) is provided with a scale indicator (14); a presser (15) is arranged on the scale indicator (14); each sleeve shaft (13) is rotatably connected with a fixing plate (16); each fixing plate (16) is provided with an arc-shaped block (161); each fixed plate (16) is fixedly connected with a second electric telescopic piece (17); each second electric expansion piece (17) expansion part is fixedly connected with a pressure plate (18).
5. A profile hole site detecting apparatus according to claim 4, wherein: the middle part of the scale indicator (14) is provided with a through hole, and the angle of the through hole is 180-270 degrees.
6. A profile hole site detecting apparatus according to claim 4, wherein: the central axis of the arc-shaped block (161) coincides with the central axis of the sleeve shaft (13), and a clamping groove convenient for the pressing device (15) to cling to is formed in the arc-shaped block (161).
7. A profile hole site detecting apparatus according to claim 6, wherein: each pressing plate (18) is provided with a plurality of rubber pads (181) for increasing friction.
8. A profile hole site detecting apparatus according to claim 7, wherein: the threaded hole detection system comprises a second connecting seat (22), a second power motor (23), a third fixing frame (24), a third power motor (25) and a buffer type detection structure; a second connecting seat (22) is fixedly connected to the left part of the lower surface of the bearing plate (5); a second power motor (23) is fixedly connected to the second connecting seat (22); a third fixing frame (24) is fixedly connected with an output shaft of the second power motor (23); a third power motor (25) is fixedly connected to the upper part of the third fixing frame (24); an output shaft of the third power motor (25) is connected with a buffer type detection structure.
9. A profile hole site detecting apparatus according to claim 8, wherein: the buffer type detection structure comprises a thread detection head (26), a connecting shaft (27), a buffer (28) and a cleaner (29); an output shaft of the third power motor (25) is fixedly connected with a connecting shaft (27); a buffer (28) is fixedly connected to the connecting shaft (27); a thread detection head (26) is fixedly connected to the buffer (28); a cleaner (29) is fixedly connected to the buffer (28), and the cleaner (29) is positioned below the thread detection head (26).
10. A profile hole site detecting apparatus according to claim 4, wherein: also comprises a tightening mechanism; the connecting ring (2) on the upper side is connected with a tightening mechanism; the tightening mechanism comprises a second fixed frame (19), a second spring rod (20) and a fastening plate (21); the left part and the right part of the upper connecting ring (2) are respectively fixedly connected with a second fixing frame (19); each second fixing frame (19) is connected with a second spring rod (20); each second spring rod (20) is fixedly connected with a fastening plate (21).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211197330.5A CN115289972B (en) | 2022-09-29 | 2022-09-29 | Profile hole site detection equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211197330.5A CN115289972B (en) | 2022-09-29 | 2022-09-29 | Profile hole site detection equipment |
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| CN115289972A true CN115289972A (en) | 2022-11-04 |
| CN115289972B CN115289972B (en) | 2022-12-23 |
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| CN112781469A (en) * | 2021-02-04 | 2021-05-11 | 深圳市金致卓科技有限公司 | Hole site detection tool for PCBA board |
| CN214490011U (en) * | 2020-11-19 | 2021-10-26 | 深圳市顺尔通工业设计有限公司 | Star pendant processingequipment that can carry out aperture detection to pendant |
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| KR101336787B1 (en) * | 2012-07-18 | 2013-12-04 | 서울과학기술대학교 산학협력단 | Link type probe for borehole loading test, borehole loading test method using the probe and analyzing method of pile bearing capacity by the test |
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| CN115289972B (en) | 2022-12-23 |
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